论文部分内容阅读
在短视线(不到100米)的三角高程测量实践中,不便于采用光电测距仪观测距离。此时用竖直基线法能方便地确定距离。最近的文献[1—3]证明:采用这种方法确定距离和高差可以达到很高的精度。待定距离 D 的误差 m_D 取决于基线的长度和精度,同时也取决于天顶距的大小和观测精度。可拟定第一个位置 Z_H=90°和第二个位置 Z_H≠90°的观测方案(图1)。
In the short-sighted (less than 100 meters) triangular elevation measurement practice, not easy to use photoelectric range finder to observe the distance. In this case, the vertical baseline method can easily determine the distance. Recent literature [1-3] proved that this method can be used to determine the distance and height difference can achieve high accuracy. The error m_D of the undetermined distance D depends on the length and accuracy of the baseline, and also on the size of the zenith and the observation accuracy. An observational scheme with the first position Z_H = 90 ° and the second position Z_H ≠ 90 ° can be drawn (Fig. 1).